US11880520B2 - Display device - Google Patents
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- US11880520B2 US11880520B2 US17/403,100 US202117403100A US11880520B2 US 11880520 B2 US11880520 B2 US 11880520B2 US 202117403100 A US202117403100 A US 202117403100A US 11880520 B2 US11880520 B2 US 11880520B2
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- touch
- sub
- signal line
- touch sensing
- touch signal
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Classifications
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- G—PHYSICS
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/17—Passive-matrix OLED displays
- H10K59/179—Interconnections, e.g. wiring lines or terminals
- H10K59/1795—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
Definitions
- One or more embodiments described herein relate to a display device.
- a variety of displays have been incorporated into smart phones, digital cameras, laptop computers, navigation devices, and smart televisions as well as other devices. Examples include liquid-crystal displays, field emission displays, organic light-emitting displays, inorganic light-emitting displays, and micro-light-emitting displays. Some displays have a touch panel that receives instructions or other forms of input for purposes of performing corresponding functions.
- One or more embodiments provide a display device including a touch member that can improve uniformity of touch sensitivity and can suppress or prevent defects caused by particles. It should be noted that features of the present disclosure are not limited to the above-mentioned features; and other features of the present disclosure will be apparent to those skilled in the art from the following descriptions.
- a display device includes a display panel and a touch member comprising a first conductive layer and a second conductive layer disposed on the display panel, and a touch insulating layer interposed between the first conductive layer and the second conductive layer.
- the touch member includes a first touch signal line and a second touch signal line separated from each other, the first touch signal line including a first sub-touch signal line formed as the first conductive layer and a second sub-touch signal line formed as the second conductive layer and connected to the first sub-touch signal line through a first contact hole and a second contact hole penetrating the touch insulating layer.
- the second touch signal line includes a third sub-touch signal line formed as the first conductive layer and a fourth sub-touch signal line formed as the second conductive layer and connected to the third sub-touch signal line through a third contact hole and a fourth contact hole penetrating the touch insulating layer.
- the first contact hole and the second contact hole are spaced apart from each other by a first distance
- the third contact hole and the fourth contact hole are spaced apart from each other by a second distance less than the first distance.
- a display device includes a display panel and a touch member disposed on the display panel and comprising a first touch sensing line comprising a first sub-touch sensing line and a second sub-touch sensing line, and a second touch sensing line comprising a third sub-touch sensing line and a fourth sub-touch sensing line.
- the first sub-touch sensing line and the second sub-touch sensing line are connected in parallel with each other through a first contact hole and a second contact hole.
- the third sub-touch sensing line and the fourth sub-touch sensing line are connected in parallel with each other through a third contact and a fourth contact hole.
- a length of the first touch sensing line is longer than a length of the second touch sensing line, and a distance between the first contact hole and the second contact hole is greater than a distance between the third contact hole and the fourth contact hole.
- FIG. 1 illustrates an embodiment of a display device.
- FIG. 2 illustrates a cross-sectional embodiment of a display device.
- FIG. 3 illustrates an example of a stack structure of a display panel.
- FIG. 4 illustrates an embodiment of a touch member.
- FIG. 5 illustrates an embodiment of a touch region.
- FIG. 6 illustrates a cross-sectional view taken along line VI-VI′ of FIG. 5 .
- FIG. 7 illustrates an embodiment including touch sensing lines.
- FIG. 8 illustrates cross-sectional views taken along lines VIIIa-VIII′a and VIIIb-VIII′b of FIG. 7 .
- FIG. 9 illustrates an embodiment of a relationship between pixels and touch member in a mesh pattern in a display area.
- FIG. 10 illustrates a cross-sectional view taken along line X-X′ of FIG. 9 ;
- FIG. 11 illustrates an embodiment of touch sensing lines of a touch member.
- FIG. 12 illustrates a cross-sectional view taken along lines XIIa-XIIa′ and XIIb-XIIb′ of FIG. 11 .
- FIG. 13 illustrates an embodiment of touch sensing lines of a touch member.
- FIG. 14 illustrates an embodiment of touch sensing lines of a touch member.
- first”, “second”, etc. may be used herein to describe various elements, these elements, should not be limited by these terms. These terms may be used to distinguish one element from another element. Thus, a first element discussed below may be termed a second element without departing from teachings of one or more embodiments. The description of an element as a “first” element may not require or imply the presence of a second element or other elements.
- the terms “first”, “second”, etc. may also be used herein to differentiate different categories or sets of elements. For conciseness, the terms “first”, “second”, etc. may represent “first-category (or first-set)”, “second-category (or second-set)”, etc., respectively.
- FIG. 1 is a plan view showing the layout of a display device 1 according to an embodiment
- FIG. 2 is a cross-sectional view of a part of the display device 1 according to an embodiment.
- the first direction DR 1 may intersect the second direction DR 2 .
- the first direction DR 1 corresponds to the vertical direction and the second direction DR 2 corresponds to the horizontal direction for convenience of illustration.
- a first side of the first direction DR 1 indicates the upper side
- a second side of the first direction DR 1 indicates the lower side
- a first side of the second direction DR 2 indicates the right side
- a second side of the second direction DR 2 indicates the left side when viewed from the top.
- a third direction DR 3 refers to a direction that crosses the plane where the first direction DR 1 and the second direction DR 2 are located, and the third direction DR 3 is perpendicular to both the first direction DR 1 and the second direction DR 2 . It should be understood that the directions referred with respect to the embodiments are relative directions, and the embodiments are not limited to the directions mentioned.
- top refers to the display side of a display panel 10
- bottom refers to the opposite side of the display panel 10 , unless stated otherwise.
- display device 1 may correspond to any type of electronic device providing a display screen.
- Examples of display device 1 include a mobile phone, a smart phone, a tablet personal computer (PC), an electronic watch, a smart watch, a watch phone, a mobile communications terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation device, a game console and a digital camera, a television set, a laptop computer, a monitor, an electronic billboard, the Internet of Things devices, etc.
- the display device 1 includes an active area AAR and a non-active area NAR.
- a display area may be an area where images are displayed and a non-display area may be an area where no image is displayed.
- a touch area may be an area where a touch input is sensed.
- the display area and the touch area may be in the active area AAR.
- the display area and the touch area may overlap each other, e.g., images are displayed and touch inputs are sensed in the active area AAR.
- the active area AAR may have a predetermined shape, e.g., a rectangle or a rectangle with rounded corners.
- the shape of the active area AAR is a rectangle that has rounded corners, with sides extending in the first direction DR 1 that are longer than the sides extending in the second direction DR 2 .
- the active area AAR may have a different shape in another embodiment. Examples include a rectangular shape with sides in the second direction DR 2 longer than sides in the first direction DR 1 , a square shape, other polygonal shapes, a circular shape, and an elliptical shape.
- the non-active area NAR is around the active area AAR and may correspond to a bezel area.
- the non-active area NAR may surround all or some sides (four sides in the drawings) of the active area AAR. It is, however, to be understood that the present disclosure is not limited thereto.
- the non-active area NAR may not be disposed near the upper side of the active region AAR or near the left or right side thereof.
- Signal lines and/or driving circuits may be disposed in the non-active area NAR for applying or generating signals for the active area AAR (display area or touch area).
- the non-active area NAR may include no display area. Further, the non-active area NAR may include no touch area. In another embodiment, the non-active area NAR may include a part of the touch area, and a sensor member such as a pressure sensor may be disposed in that part.
- the active area AAR may correspond to the display area where images are displayed, while the non-active area NAR may be correspond to the non-display area where no image is displayed.
- the display device 1 includes a display panel 10 for providing a display screen.
- the display panel 10 include an organic light-emitting display panel, a micro LED display panel, a nano LED display panel, a quantum-dot display panel, a liquid-crystal display panel, a plasma display panel, a field emission display panel, an electrophoretic display panel, an electrowetting display panel, etc.
- an organic light-emitting display panel is employed as an example of the display panel 10 , but the present disclosure is not limited thereto. A different type of display panel may be employed in another embodiment.
- the display panel 10 includes a plurality of pixels arranged, for example, in a matrix.
- the shape of each pixel may be, but is not limited to, a rectangle or a square when viewed from the top.
- each pixel may have a diamond shape having sides inclined with respect to the first direction DR 1 or the second direction DR 2 .
- Each pixel may include an emission area, which may have a shape which is substantially the same as or different from the shape of the pixels.
- the shape of the emission area of each pixel may be a rectangle or may be a different shape, e.g., a diamond, a hexagon, an octagon, or a circle. Embodiments of the pixels and emission areas will be described in detail later.
- the display device 1 may further include a touch member for sensing a touch input.
- the touch member may be implemented, for example, as a panel or film separated from and coupled to the display panel 10 or may be implemented to include a touch layer inside the display panel 10 .
- the touch member is provided inside the touch panel to be included in the display panel 10 .
- the touch member may be provided in a different arrangement in another embodiment.
- the display panel 10 may include a flexible substrate including a flexible polymer material such as polyimide. Accordingly, the display panel 10 may be curved, bent, folded, and/or rolled. In one embodiment, the display panel 10 may include a bending region BR, and may be divided into a main region MR located on one side of the bending region BR and a subsidiary region SR located on another side of the bending region BR.
- a bending region BR may be divided into a main region MR located on one side of the bending region BR and a subsidiary region SR located on another side of the bending region BR.
- the display area of the display panel 10 is located in the main region MR.
- edge portions of the display area in the main region MR, all or part of the bending region BR and all or part of the subsidiary region SR may be the non-display area. It is, however, to be understood that the present disclosure is not limited thereto.
- the bending region BR and/or the subsidiary region SR may also include the display area.
- the main region MR may have a shape generally similar to the appearance of the display device 1 when viewed from the top.
- the main region MR may be a flat region located in one plane. It is, however, to be understood that the present disclosure is not limited thereto.
- At least one of the edges of the main region MR, except for the edge (side) connected to the bending region BR, may be bent to form a curved surface or may be bent at a right angle.
- the display area may also be disposed at the edge. It is, however, to be understood that the present disclosure is not limited thereto.
- the curved or bent edge may be the non-display area that does not display an image or the display area and the non-display area may be disposed together.
- the bending region BR is connected to the other side of the main region MR in the first direction DR 1 .
- the bending region BR may be connected to the lower shorter side of the main region MR.
- the width of the bending region BR may be less than the width (width of the shorter side) of the main region MR.
- the portions where the main region MR meets the bending region BR may be cut in an L-shape.
- the display panel 10 may be bent downward in the thickness direction, e.g., in the direction away from the display surface with a curvature.
- the bending region BR may have a constant radius of curvature or may have different radii of curvature for different sections.
- the surface of the display panel 10 may be reversed. For example, the surface of the display panel 10 facing upward may be bent to face outwardly at the bending region BR and then to face downwardly.
- the subsidiary region SR is extended from the bending region BR and, for example, may extend in a direction parallel to the main region MR from the end of the bending region.
- the sub region SR may overlap with the main region MR in the thickness direction of the display panel 10 .
- the width of the subsidiary region SR (the width in the second direction DR 2 ) may be, but is not limited to being, equal to the width of the bending region BR.
- a driver chip IC may be disposed in the subsidiary region SR and may include an integrated circuit for driving the display panel 10 .
- the integrated circuit may include an integrated circuit for display and/or an integrated circuit for a touch unit.
- the integrated circuit for a display and the integrated circuit for a touch unit may be provided as separate chips or may be integrated into a single chip.
- the pads may be disposed at the end of the subsidiary region SR of the display panel 10 .
- the pads may include display signal line pads and touch signal line pads.
- a drive substrate FPC may be connected to the pads at the end of the subsidiary region SR of the display panel 10 .
- the drive substrate FPC may be a flexible printed circuit (FPC) board or a film.
- FIG. 3 is a cross-sectional view showing an example of a stack structure of the display panel 10 according to an embodiment.
- the display device 1 may include the display panel 10 , an anti-reflection layer RPL, and a protective layer WDL, which are stacked on one another.
- the display panel 10 may include a substrate SUB, a circuit driving layer DRL, an emissive layer EML, an encapsulation layer ENL, and a touch layer TSL, which are stacked on one another.
- the substrate SUB may support elements disposed thereon.
- the circuit-driving layer DRL may be disposed on the substrate SUB and may include a circuit for driving an emissive layer EML of each pixel.
- the circuit-driving layer DRL may include a plurality of thin-film transistors.
- the emissive layer EML may be disposed on the circuit-driving layer DRL and may include an organic emitting layer.
- the emissive layer EML may emit light with various luminances depending on driving signals transmitted from the circuit-driving layer DRL.
- the encapsulation layer ENL may be disposed on the emissive layer EML and may include an inorganic layer or a stack of an inorganic layer and an organic layer.
- glass or an encapsulation film may be employed as the encapsulation layer ENL.
- a touch layer TSL may be disposed on the encapsulation layer ENL and may sense a touch input and perform functions of the touch member.
- the touch layer TSL may include a plurality of sensing regions and sensing electrodes.
- the anti-reflection layer RPL may be disposed on the touch layer TSL and may serve to reduce reflection of external light.
- the anti-reflection layer RPL may be attached in the form of a polarizing film. In such case, the anti-reflection layer RPL may polarize the light passing through it, and, for example, may be attached on the touch layer TSL through an adhesive layer.
- the anti-reflection layer RPL in the form of a polarizing film may be eliminated.
- the anti-reflection layer RPL may serve to reduce reflection of external light. It is, however, to be understood that the present disclosure is not limited thereto.
- the anti-reflection layer RPL may be stacked in the form of a color filter layer inside the display panel 10 . In such case, the anti-reflection layer RPL may include a color filter that selectively transmits light of a particular wavelength, etc.
- the protective layer WDL may be disposed on the anti-reflection layer RPL and may include, for example, a window member.
- the protective layer WDL may be attached on the anti-reflection layer RPL by an optically clear adhesive or the like. An embodiment of the stack structure of display panel 10 will be described in more detail later.
- FIG. 4 is a schematic plan view of a touch member according to an embodiment.
- FIG. 5 is an enlarged view of part of the touch region of FIG. 4 .
- FIG. 6 is a cross-sectional view taken along line VI-VI′ of FIG. 5 .
- the touch member may include a touch region located in the active area AAR and a non-touch region located in the non-active area NAR.
- Embodiments of the touch member and the non-touch region are set forth in FIG. 4 for convenience of illustration.
- the shapes of the touch region and the non-touch region may be substantially the same as those of the active area AAR and the non-active area NAR described above.
- the touch region of the touch member may include a plurality of first sensing electrodes IE 1 (or first touch electrodes) and a plurality of second sensing electrodes IE 2 (or second touch electrodes).
- the first sensing electrodes IE 1 or the second sensing electrodes IE 2 may be driving electrodes and the others may be sensing electrodes.
- the first sensing electrodes IE 1 are driving electrodes and the second sensing electrodes IE 2 are sensing electrodes.
- the first sensing electrodes IE 1 may be extended in the first direction DR 1 , may include a plurality of first sensor portions SP 1 arranged in the first direction DR 1 , and first connecting parts CP 1 may electrically connect adjacent ones of the first sensor portions SP 1 .
- the plurality of first sensing electrodes IE 1 may be arranged in the second direction DR 2 .
- the second sensing electrodes IE 2 may be extended in the second direction DR 2 , may include a plurality of second sensor portions SP 2 arranged in the second direction DR 2 , and the second connecting parts CP 2 may electrically connect adjacent ones of the second sensor portions SP 2 .
- the second sensing electrodes IE 2 may be arranged in the first direction DR 1 . In this embodiment, four first sensing electrodes IE 1 and six second sensing electrodes IE 2 are arranged. However, it is to be understood that different numbers of the first sensing electrodes IE 1 and/or the second sensing electrodes IE 2 may be included in another embodiment.
- first sensor portions SP 1 and the second sensor portions SP 2 may have a diamond shape. Some of the first sensor portions SP 1 and the second sensor portions SP 2 may have a truncated diamond shape. For example, all or some of the first sensor portions SP 1 and the second sensor portions SP 2 (except the first and last ones in the extension direction) may have a diamond shape, and each of the first and last ones in the extension direction may have a triangle shape obtained by cutting the diamond shape.
- the first sensor portions SP 1 and the second sensor portions SP 2 in the diamond shape may have substantially the same size and/or shape.
- the first sensor portions SP 1 and the second sensor portions SP 2 in the triangle shape may have substantially the same size and/or shape. It is, however, to be understood that the present disclosure is not limited thereto.
- the first sensor portions SP 1 and the second sensor portions SP 2 may have a variety of shapes and sizes in other embodiments.
- Each of the first sensor portions SP 1 of the first sensing electrodes IE 1 and the second sensor portions SP 2 of the second sensing electrodes IE 2 may include a predetermined pattern, e.g., a planar pattern or a mesh pattern.
- the first sensor portions SP 1 and the second sensor portions SP 2 may be formed as a transparent conductive layer.
- the first sensor portions SP 1 and the second sensor portions SP 2 include a mesh pattern disposed along the non-emission areas as illustrated in FIGS. 5 and 7 , it is possible to employ an opaque, low-resistance metal without interfering with the propagation of the emitted light.
- each of the first sensor portions SP 1 and the second sensor portions SP 2 include a mesh pattern. It is, however, to be understood that a pattern different from a mesh pattern or planar pattern may exist in another embodiment.
- Each of the first connecting parts CP 1 may connect a vertex of the diamond or triangle shape of a first sensor portion SP 1 with that of an adjacent first sensor portion SP 1 .
- Each of the second connecting parts CP 2 may connect a vertex of the diamond or triangle shape of a second sensor portion SP 2 with that of an adjacent second sensor portion SP 2 .
- the width of the first connecting parts CP 1 and the second connecting parts CP 2 may be less than the width of the first sensor portions SP 1 and the second sensor portions SP 2 .
- the first sensing electrodes IE 1 and the second sensing electrodes IE 2 may be insulated from each other and intersect each other.
- the first sensing electrodes IE 1 are connected to one another by a conductive layer and the second sensing electrodes IE 2 are connected to one another by another conductive layer disposed on a different layer at the intersections, such that the first sensing electrodes IE 1 can be insulated from the second sensing electrodes IE 2 .
- the first sensing electrodes IE 1 can be connected to one another by the first connecting parts CP 1 while the second sensing electrodes IE 2 can be connected to one another by the second connecting parts CP 2 , so that they can be insulated from each other while intersecting each other. To do so, the first connecting parts CP 1 and/or the second connecting parts CP 2 may be located on a different layer from the first sensing electrode IE 1 and the second sensing electrode IE 2 .
- first sensor portions SP 1 of the first sensing electrodes IE 1 and the second sensor portions SP 2 of the second sensing electrodes IE 2 may be formed as a conductive layer located on the same layer, and neither of the first sensor portions SP 1 and the second sensor SP 2 may intersect or overlap with each other.
- the adjacent ones of the first sensor portions SP 1 and second sensor portions SP 2 may be physically separated from each other.
- the second connecting parts CP 2 may be formed of the same conductive layer as the second sensor portions SP 2 and may connect the adjacent ones of the second sensor portions SP 2 .
- a first sensor portion SP 1 of a first sensing electrode IE 1 is physically separated from an adjacent sensor portion SP 1 thereof, with respect to the area where a second connecting part CP 2 passes.
- the first connecting parts CP 1 connecting the first sensor portions SP 1 with one another, may be formed of a different conductive layer from the first sensor portions SP 1 and may traverse the area of the second sensing electrodes IE 2 .
- Each of the first connecting parts CP 1 may be electrically connected to respective first sensor portions SP 1 by a contact.
- each of the first connection parts CP 1 may include a first connecting part CP 1 _ 1 which overlaps an adjacent second sensing electrode IE 2 on one side, and another first connecting part CP 1 _ 2 which overlaps another adjacent second sensing electrode IE 2 on the other side. Because more than one first connecting part CP 1 may connect two adjacent ones of the first sensor portions SP 1 , it is possible to prevent disconnection of the first sensing electrodes IE 1 even when any of the first connecting parts CP 1 is broken by static electricity or the like.
- the first sensor portions SP 1 and the second sensor portions SP 2 may form a unit sensing region SUT (e.g., see FIG. 5 ).
- halves of two adjacent first sensor portions SP 1 and halves of two adjacent second sensor portions SP 2 may form a square or a rectangle, with respect to the intersection of the first sensing electrodes IE 1 and the second sensing electrodes IE 2 .
- the area defined by the halves of the adjacent two first sensor portions SP 1 and halves of the two adjacent second sensor portions SP 2 may be a unit sensing region SUT.
- a plurality of unit sensing regions SUT may be arranged in row and column directions.
- the capacitance value between the adjacent first sensor portions SP 1 and the second sensor portions SP 2 may be measured to determine whether or not a touch input has occurred. If so, the position of the touch input may be obtained as touch input coordinates. For example, a touch may be sensed by, for example, measuring mutual capacitance.
- each unit sensing region SUT may be larger than the size of a pixel.
- each unit sensing region SUT may have an area equal to the area occupied by a plurality of pixels.
- the length of a side of the unit sensing area SUT may be in the range of, but is not limited to, about 4 to about 5 mm.
- a plurality of touch signal lines may be disposed in the non-active area NAR outside the touch region.
- the touch signal lines may be extended from the touch pads TPA 1 and TPA 2 , and the touch pads TPA 1 and TPA 2 may be located in the subsidiary region SR (e.g., see FIG. 1 ).
- the touch signal lines may be extended from the touch pads TPA 1 and TPA 2 located in the subsidiary region SR to the non-active area NAR of the main region MR through the bending region BR (e.g., see FIG. 1 ).
- the touch signal lines include touch driving lines TX and touch sensing lines RX.
- the touch signal lines may further include touch ground lines G and/or touch antistatic lines ES.
- the touch driving lines TX are connected to the first sensing electrodes IE 1 .
- a plurality of touch driving lines may be connected to a single first sensing electrode IE 1 .
- the touch driving lines may include first touch driving lines TX 1 _ 1 , TX 2 _ 1 , TX 3 _ 1 and TX 4 _ 1 connected to the lower end of the first sensing electrodes IE 1 , and second touch driving lines TX 1 _ 2 , TX 2 _ 2 , TX 3 _ 2 and TX 4 _ 2 connected to the upper end of the first sensing electrodes IE 1 .
- the first touch driving lines TX 1 _ 1 , TX 2 _ 1 , TX 3 _ 1 and TX 4 _ 1 may be extended from touch signal line pads TPA 1 as indicated by the upper arrow in the first direction DR 1 and may be connected to the lower end of the first sensing electrodes IE 1 .
- the second touch driving lines TX 1 _ 2 , TX 2 _ 2 , TX 3 _ 2 and TX 4 _ 2 may be extended from the touch signal line pads TPA 1 as indicated by the upper arrow in the first direction DR 1 and may go along the left edge of the touch region to be connected to the upper end of the first sensing electrodes IE 1 .
- the touch sensing lines RX are connected to the second sensing electrodes IE 2 .
- a single touch sensing line RX may be connected to a single second sensing electrode IE 2 .
- the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be extended from touch signal line pads TPA 2 (as indicated by the upper arrow in the first direction DR 1 ) and may go along the right edge of the touch region to be connected to the right end of the second sensing electrodes IE 2 .
- the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be spaced apart from one another in the second direction DR 2 .
- Each of the touch sensing lines RX: RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may include a stack of multiple layers.
- the multiple layers may be electrically connected with each other through contact holes.
- At least one layer of the multiple layers may include a plurality of divided patterns.
- the length by which the divided patterns of one of the touch sensing lines RX: RX 1 , RX 2 , RX 3 , RX 4 , RX 5 or RX 6 are electrically connected to the other layers thereof may be different from the length by which the divided patterns of the others of the touch sensing lines RX: RX 1 , RX 2 , RX 3 , RX 4 , RX 5 or RX 6 are electrically connected to the other layers thereof.
- FIG. 7 is an enlarged view of some of touch sensing lines according to an embodiment.
- FIG. 8 shows cross-sectional views taken along lines VIIIa-VIII′a and VIIIb-VIII′b of FIG. 7 .
- FIG. 8 schematically shows the flows of electric currents in the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 , and RX 6 .
- the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may include first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 , and second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 , respectively.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 are in the non-active area NAR (e.g., see FIG. 1 ).
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may be formed as a first touch conductive layer 210 .
- the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 may be formed as a second touch conductive layer 220 . It is, however, to be understood that the present disclosure is not limited thereto.
- the sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may at least partially overlap with the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 in the thickness direction (the third direction DR 3 ), respectively.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and/or the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 may be implemented as divided patterns. Each of the divided patterns may include, but is not limited to, a predetermined shape, e.g., an island shape or another shape.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are implemented as divided patterns.
- the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 are implemented as single pieces. It is, however, to be understood that the present disclosure is not limited thereto.
- the divided patterns of one of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 or RS 61 may have substantially the same shape.
- the divided patterns of the first sub-touch sensing line RS 11 of the first touch sensing line RX 1 may have substantially the same shape. It is, however, to be understood that the present disclosure is not limited thereto.
- the divided patterns of the first sub-touch sensing line RS 21 of the second touch sensing line RX 2 may have substantially the same shape, which is different from the shape of the divided patterns of the first sub-touch sensing line RS 11 of the first touch sensing line RX 1 .
- a similar description may be applied to the other sub-touch sensing lines RS 31 , RS 41 , RS 51 , and RS 61 as well.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 may be electrically connected to each other through contact holes CNT 11 , CNT 12 , CNT 21 , CNT 22 , CNT 31 , CNT 32 , CNT 41 , CNT 42 , CNT 51 , CNT 52 , CNT 61 and CNT 62 , respectively.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 may be connected in parallel with each other, respectively.
- the first sub-touch sensing line RS 11 of the first touch sensing line RX 1 may be in contact with the second sub-touch sensing line RS 12 of the first touch sensing line RX 1 through the contact holes CNT 11 and CNT 12 penetrating through a first touch insulating layer 213 to expose the first sub-touch sensing line RS 11 .
- the above description on the first touch sensing line RX 1 can be applied in a similar manner to second to sixth touch sensing lines RX 2 , RX 3 , RX 4 , RX 5 and RX 6 .
- the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 may have different lengths from the touch pads TPA 2 to the second sensing electrodes IE 2 .
- the lengths of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 or the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 may be longer toward the outer side of the display device 1 .
- the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 among the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 , the second sub-touch sensing line RS 12 of the first touch sensing line RX 1 may have the longest length, while the second sub-touch sensing line RS 62 of the sixth touch sensing line RX 6 may have the shortest length. It is, however, to be understood that the present disclosure is not limited thereto.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may have different lengths.
- the lengths of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 in the first direction DR 1 may be longer toward the first touch sensing line RX 1 and may be shorter toward the sixth touch sensing line RX 6 . It is, however, to be understood that the present disclosure is not limited thereto.
- the contact holes (in which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 are in contact with each other, respectively) may be located at respective ends of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 .
- the position at which the first sub-touch sensing line RS 11 and the second sub-touch sensing line RS 12 of the first touch sensing wire RX are in contact with each other may be located at respective ends of the first sub-touch sensing line RS 11 in the second direction DR 2 . It is, however, to be understood that the present disclosure is not limited thereto.
- the lengths by which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are electrically connected to the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 , respectively, may be different from one another.
- the lengths by which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are electrically connected to the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 , respectively, may become longer toward the outer side of the display device 1 .
- the lengths by which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are electrically connected to the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 , respectively, may become longer toward the first touch sensing line RX 1 and may become shorter toward the sixth touch sensing line RX 6 . It is, however, to be understood that the present disclosure is not limited thereto.
- a first length d 1 between the contact holes CNT 11 and CNT 12 electrically connecting the first sub-touch sensing line RS 11 with the second sub-touch sensing line RS 12 of the first touch sensing line may longer than a sixth length d 6 between the contact holes CNT 61 and CNT 62 electrically connecting the first sub-touch sensing line RS 61 and the second sub-touch sensing line RS 62 of the sixth touch sensing line.
- the expression “electrically connected length” may be indicative of the distance between the contact holes electrically connecting the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 with the second sub-touch sensing lines RS 11 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 , respectively.
- the expression “electrically connected length” may correspond to the length of each of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 in which electric current actually flows when the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are electrically connected to the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 and RS 26 , respectively.
- the expression “electrically connected length” may refer to the sum of the lengths by which the divided patterns of each of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are electrically connected to the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 and RS 26 , respectively.
- the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be calculated, for example, based on Equation 1 and Equation 2.
- Equation 1 may be used as a basis for calculating two resistors connected in parallel.
- Equation 2 may be indicative of the relationship between electrical resistance, length and cross-sectional area.
- RX denotes the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 in which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are connected in parallel with the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 , respectively.
- R 1 denotes the electrical resistance of each of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6
- R 2 denotes the electrical resistance of each of the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 .
- R denotes electrical resistance
- L denotes the resistor length
- A denotes the cross-sectional area of the resistor.
- the electrical resistance of a conductive line may be proportional to the length of the line and may be inversely proportional to the cross-sectional area of the line.
- the electrical resistances of the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may increase toward the first touch sensing line RX 1 .
- the electrical resistance of the second sub-touch sensing line RS 12 of the first touch sensing line RX 1 may be greater than the electrical resistance of the second sub-touch sensing line RS 62 of the sixth touch sensing line RX 6 .
- the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be reduced as the area of each of the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 and RS 26 in which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are connected in parallel to them, respectively, is larger.
- the areas of the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 and RS 26 in the parallel connection, along with the areas of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 in the parallel connection, may have relatively low electrical resistances in the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 .
- the electrical resistances of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 can be reduced as the areas in which the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 are in the parallel connection are lager.
- the length by which the second sub-touch sensing line RS 12 of the first touch sensing line RX 1 is electrically connected to the first sub-touch sensing line RS 11 may be longer than the length by which the second sub-touch sensing line RS 62 of the sixth touch sensing line RX 6 is electrically connected to the first sub-touch sensing line RS 61 .
- the length by which the second sub-touch sensing line RS 12 of the first touch sensing line RX 1 is connected in parallel to the first sub-touch sensing line RS 11 may be greater than the length by which the second sub-touch sensing line RS 62 of the sixth touch sensing line RX 6 is connected in parallel to the first sub-touch sensing line RS 61 .
- the electrical resistance of the second sub-touch sensing line RS 12 of the first touch sensing line RX 1 is greater than the electrical resistance of the second sub-touch sensing line RS 62 of the sixth touch sensing line RX 6 , because they are connected to the first sub-touch sensing lines RS 11 and RS 61 in parallel, respectively, the electrical resistance of the first touch sensing line RX 1 can be reduced more than that of the electrical resistance of the sixth touch sensing line RX 6 .
- the electrical resistance of the first touch sensing line RX 1 can be substantially equal to that of the sixth touch sensing line RX 6 . It is to be understood that the foregoing description can be applied in a similar manner to the second to fifth touch sensing lines RX 2 , RX 3 , RX 4 and RX 5 .
- the touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 it is possible to individually adjust the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 , and is also possible to uniformly adjust the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 . As a result, the touch sensitivity of the touch member can become more uniform.
- the resistances of the touch sensing line RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be substantially equal. In another embodiment, the resistances of the touch sensing line RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be different. At least in this latter case, no separate space for such design has to be used. Thus, the non-active area NAR (e.g., see FIG. 1 ) can be reduced, to allow a viewer to experience more immersive content.
- contact resistances between the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 may be considered.
- first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may be spaced apart from one another by certain gaps.
- the divided patterns of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may have different gaps g 1 , g 2 , g 3 , g 4 , g 5 and g 6 , respectively.
- the gaps g 1 , g 2 , g 3 , g 4 , g 5 and g 6 may become longer toward the first touch sensing line RX 1 and may become shorter toward the sixth touch sensing line RX 6 . It is, however, to be understood that the present disclosure is not limited thereto.
- Each of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may be extended in the first direction DR 1 , and the gaps of the divided patterns of each of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may be arranged along the first direction DR 1 .
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the gaps thereof may be arranged alternately.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 it is possible to suppress or prevent defects due to particles or the like in the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 .
- each of the touch driving lines TX may include a stack of multiple layers, and at least one of the multiple layers may be implemented as divided patterns.
- touch antistatic lines ES may be disposed at the outermost position of the touch signal lines.
- the touch antistatic lines may include a first touch antistatic line ES 1 , a second touch antistatic line ES 2 , a third touch antistatic line ES 3 , and a fourth touch antistatic line ES 4 .
- the first to fourth touch antistatic lines ES may surround the touch region and the signal lines in a ring shape.
- the first touch antistatic line ES 1 may cover a touch signal line located on the right side from its outer side.
- the second touch antistatic line ES 2 may cover a touch signal line located on the right side from its inner side.
- a third touch antistatic line ES 3 may cover the inner side of a touch signal line located on the left side and the outer side of a touch signal line extended in the second direction DR 2 on the lower side of the touch region.
- a fourth touch antistatic line ES 4 may cover the outer side of a touch signal line located on the left side and the outer side of a touch signal line extended in the second direction DR 2 on the upper side of the touch region.
- the touch ground lines G may be disposed between the signal lines and, for example, may include a first touch ground line G 1 , a second touch ground line G 2 , a third touch ground line G 3 , a fourth touch ground line G 4 and a fifth touch ground line G 5 .
- the first touch ground line G 1 may be disposed between the touch sensing lines RX and the first touch antistatic line ES 1 .
- the second touch ground line G 2 may be disposed between the second touch antistatic line ES and the touch sensing lines RX.
- the third touch ground line G 3 may be disposed between the first touch driving line TX_ 1 and the third touch antistatic line ES 3 .
- the fourth touch ground line G 4 may be disposed between the first touch driving line TX_ 1 and the second touch driving line TX_ 2 .
- the fifth touch ground line G 5 may be disposed between the second touch driving line TX_ 2 and the fourth touch antistatic line ES 4 .
- the touch member may include a base layer 205 , a first touch conductive layer 210 on the base layer 205 , a first touch insulating layer 215 on the first touch conductive layer 210 , a second touch conductive layer 220 on the first touch insulating layer 215 and a second touch insulating layer 230 covering the second touch conductive layer 200 .
- the first touch conductive layer 210 is disposed on the base layer 205 .
- the first touch conductive layer 210 is covered by the first touch insulating layer 215 .
- the first touch insulating layer 215 insulates the first touch conductive layer 210 from the second touch conductive layer 220 .
- the second touch conductive layer 220 is disposed on the first touch insulating layer 215 .
- the second touch insulating layer 230 covers and protects the second touch conductive layer 220 .
- the base layer 205 may include an inorganic insulating material.
- the base layer 205 may include a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.
- base layer 205 may be replaced with a second inorganic layer 193 forming a thin encapsulation layer to be described later.
- Each of the first touch conductive layer 210 and the second touch conductive layer 220 may include a metal or a transparent conductive layer.
- the metal may include aluminum, titanium, copper, molybdenum, silver, or an alloy thereof.
- the transparent conductive layer may include a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and indium tin zinc oxide (ITZO), a conductive polymer such as PEDOT, metal nanowire, grahpene, etc.
- the first touch conductive layer 210 and/or the second touch conductive layer 220 may include a multi-layered conductive layer.
- the first touch conductive layer 210 and/or the second touch conductive layer 220 may have a three-layer structure of titanium/aluminum/titanium.
- the first connecting parts CP 1 may be formed as the first touch conductive layer 210 and the first sensor portions SP 1 , the second sensor portions SP 2 and the second connecting parts CP 2 may be formed as the second touch conductive layer 220 . It is, however, to be understood that the present disclosure is not limited thereto.
- the first connecting parts CP 1 may be formed as the second touch conductive layer 220 and the sensor portions SP 1 and SP 2 and the second connecting parts CP 2 may be formed as the first touch conductive layer 210 .
- the touch signal lines may be formed as either the first touch conductive layer 210 or the second touch conductive layer 220 . In one embodiment, they may be formed as the first touch conductive layer 210 and the second touch conductive layer 220 connected by a contact. In other embodiments, the touch conductive layers forming the elements of the sensing electrodes and the signal lines may be modified in a variety of ways.
- the first touch insulating layer 215 and the second touch insulating layer 230 may include an inorganic material or an organic material.
- the first touch insulating layer 215 or the second touch insulating layer 230 may include an inorganic material and the other may include an organic material.
- the first touch insulating layer 215 may include a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, an aluminum oxide layer, etc.
- the second touch insulating layer 230 may include at least one selected from the group consisting of: an acrylic resin, a methacrylic resin, a polyisoprene, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a siloxane resin, a polyimide resin, a polyamide resin, and a perylene resin.
- an acrylic resin a methacrylic resin, a polyisoprene, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a siloxane resin, a polyimide resin, a polyamide resin, and a perylene resin.
- FIG. 9 is a diagram showing the relative arrangement relationship between the pixels and the touch member in a mesh pattern in the display area according to an embodiment of the present disclosure.
- the display area of the active area AAR includes a plurality of pixels.
- Each pixel includes an emission area EMA that overlaps with an opening of a pixel-defining layer 126 (e.g., see FIG. 10 ) and may be so defined.
- a non-emission area NEM is disposed between the emission area EMA of a pixel and the emission area EMA of another pixel. The non-emission area NEM overlaps with the pixel-defining layer 126 (e.g., see FIG. 10 ) and may be so defined.
- the non-emission area NEM may surround the emission area EMA and may have a predetermined shape, e.g., a lattice shape or a mesh shape arranged along the diagonal directions intersecting with the first direction DR 1 and the second direction DR 2 when viewed from the top.
- a predetermined shape e.g., a lattice shape or a mesh shape arranged along the diagonal directions intersecting with the first direction DR 1 and the second direction DR 2 when viewed from the top.
- the mesh pattern MSP is disposed in the non-emission area NEM and, for example, may be substantially the same as at least one of the first touch conductive layer 210 or the second touch conductive layer 220 as described with reference to FIGS. 4 to 6 .
- the pixels may include first color pixels (e.g., red pixels), second color pixels (e.g., blue pixels), and third color pixels (e.g., green pixels).
- the shape of the emission area EMA of each color pixel may have a predetermined shape, e.g., generally an octagon, a square or a diamond with rounded corners. It is, however, to be understood that the present disclosure is not limited thereto. In other embodiments, the shape of each emission area EMA may be a circle, a diamond, other polygons with or without rounded corners, or another shape.
- the emission area EMA_R of the first color pixel and the emission area EMA_B of the second color pixel may have similar shapes, e.g., a diamond shape with rounded corners.
- the emission area EMA_B of the second color pixel may be larger than the emission area EMA_R of the first color pixel.
- the emission area EMA_G of the third color pixel may be smaller than the emission area EMA_R of the first color pixel.
- the emission area EMA_G of the third color pixel may have an octagon shape that is inclined in a diagonal direction and having the maximum width in the inclined direction.
- the third color pixels may include third color pixels in which an emission area EMA_G 1 is inclined in a first diagonal direction, and third color pixels in which an emission area EMA_G 2 is inclined in a second diagonal direction.
- the color pixels may be arranged in a variety of ways.
- the first color pixels (e.g., red pixels) and the second color pixels (e.g., blue pixels) may be alternately arranged in the second direction DR 2 to form a first row
- third color pixels e.g., green pixels
- the pixels belonging to the second row may be arranged in a staggered manner in the second direction DR 2 with respect to the pixels belonging to the first row.
- the third color pixels that are inclined in the first diagonal direction and the third color pixels that are inclined in the second diagonal direction may be alternately arranged in the second direction DR 2 .
- the number of the third color pixels belonging to the second row may be twice the number of the first color pixels or the number of the second color pixels belonging to the first row.
- the color pixels of the like colors as the first row may be arranged in the reversed order.
- a second color pixel is disposed in the same column of the third row.
- a first color pixel is disposed in the same column of the third row.
- the third color pixels are arranged like the second row but they may be arranged in the reversed order in view of the shapes inclined with respect to the diagonal directions.
- a third color pixel inclined in the second diagonal direction is disposed in the same column of the fourth row.
- a third color pixel inclined in the first diagonal direction is disposed in the same column of the fourth row.
- the arrangement of the first to fourth rows may be repeated in the first direction DR 1 . It is to be understood that the arrangement of the pixels is not limited to the above example.
- the mesh pattern MSP may be disposed along the boundaries of the pixels in the non-emission area NEM.
- the mesh pattern MSP may not overlap with the emission area EMA.
- the width of the mesh pattern MSP may be less than the width of the non-emission area NEM.
- mesh holes MHL exposed by the mesh pattern MSP may have a predetermined shape, e.g., a substantially diamond shape.
- the mesh holes MHL may have substantially the same size.
- the mesh holes MHL may have different sizes depending on the size of the emission area EMA exposed via the mesh holes MHL or regardless of it.
- a single mesh hole MHL is formed in a single emission area EMA in the drawing, this is merely illustrative. In some implementations, a single mesh hole MHL may be formed across two or more emission areas EMA. An embodiment of a cross-sectional structure of the display device will be described.
- FIG. 10 is a cross-sectional view taken along line X-X′ of FIG. 9 .
- the substrate SUB of the display device 1 may be made of an insulating material. Examples include a polymer resin Examples of the polymer material include polyethersulphone (PES), polyacrylate (PA), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP) or a combination thereof.
- the substrate 100 may be a flexible substrate that can be bent, folded, and/or rolled.
- An example of the material of the flexible substrate may be, but is not limited to, polyimide (PI).
- the anode electrode 170 is disposed on the substrate SUB.
- the anode electrode 170 is disposed directly on the substrate SUB for convenience of illustration.
- a plurality of thin-film transistors and signal lines may be disposed between the substrate SUB and the anode electrode 170 .
- the anode electrode 170 may be a pixel electrode disposed in each of the pixels and, for example, may have a stack structure of a material layer having a high work function.
- Examples include indium-tin-oxide (ITO), indium-zinc-oxide (IZO), zinc oxide (ZnO) and indium oxide (In2O3), and a reflective material layer such as silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), lead (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca) or a mixture thereof.
- the layer having a high work function may be disposed above the reflective material layer, so that it is disposed closer to the organic layer 175 .
- the anode electrode 170 may have, but is not limited to, a multilayer structure of, for example, ITO/Mg, ITO/MgF, ITO/Ag, and ITO/Ag/ITO.
- the bank 126 may be disposed on the substrate SUB and over the anode electrode 170 and may include an opening exposing the anode electrode 170 .
- the emission area EMA and the non-emission area NEM may be separated by the pixel-defining layer 126 and the opening thereof.
- the pixel-defining layer 126 may include, for example, an organic insulating material or may include an inorganic material.
- the emissive layer is disposed on the anode electrode 170 exposed via the pixel-defining layer 126 .
- the emissive layer may include an organic layer 175 .
- the organic layer 175 may include an organic emitting layer and may further include a hole injecting/transporting layer and/or an electron injecting/transporting layer.
- a cathode electrode 180 may be disposed on the organic layer 175 and, for example, may be a common electrode disposed across the pixels.
- the anode electrode 170 , the organic layer 175 and the cathode electrode 180 may form an organic light-emitting element.
- the cathode electrode 180 may be in contact with the organic layer 175 as well as the upper surface of the bank 126 .
- the cathode electrode 180 may be formed conformally to the underlying features to reflect the level differences of the underlying features.
- the cathode electrode 180 may include a material layer having a small work function.
- the cathode electrode 180 may further include a transparent metal oxide layer disposed on the material layer having a small work function.
- a thin-film encapsulation layer 190 including a first inorganic layer 191 , an organic layer 192 and a second inorganic layer 193 is disposed on the cathode electrode 180 .
- Each of the first inorganic layer 191 and the second inorganic layer 193 may include an inorganic insulating material.
- the organic layer 192 may include an organic insulating material.
- the touch layer TSL may be disposed on the thin-film encapsulation layer 190 , and the base layer 205 , the first touch insulating layer 215 , the second touch conductive layer 220 and the second touch insulating layer 230 may be sequentially disposed. Redundant descriptions on the layers will be omitted.
- FIG. 8 is a cross-sectional view of the sensor portion, and therefore the first touch conductive layer 210 is not shown in the cross-sectional view.
- the second touch conductive layer 220 may overlap with the pixel-defining layer 126 and may be disposed in the non-emission area NEM.
- the second touch conductive layer 220 forms the mesh pattern MSP of the sensor portions and does not interfere with emission of light and is not seen by a viewer because it does not overlap with the emission area EMA.
- the anti-reflection layer RPL is disposed on the second touch insulating layer 230
- the protective layer WDL is disposed on the anti-reflection layer RPL.
- An adhesive layer OC may be further disposed between the anti-reflection layer RPL and the protective layer WDL.
- the anti-reflection layer RPL and the protective layer WDL may be bonded by the adhesive layer OC.
- the adhesive layer OC may be optically transparent.
- the adhesive layer OC may include, for example, a transparent adhesive member such as an optically clear adhesive (OCA) film and an optically clear resin (OCR).
- the anti-reflection layer RPL When the anti-reflection layer RPL is implemented as a polarizing film, the low-refractive film LR, the anti-reflection layer RPL and the adhesive layer OC may include substantially the same refractive index. Thus, it is possible to suppress or prevent refraction or total reflection at the boundaries of the elements. As a result, light emission efficiency can be improved, and reflection of external light can be reduced.
- FIG. 11 is an enlarged view showing some of touch sensing lines of a touch member according to an embodiment
- FIG. 12 is a cross-sectional view taken along lines XIIa-XIIa′ and XIIb-XIIb′ of FIG. 11 .
- the embodiment of FIGS. 11 and 12 is different from the embodiment of FIG.
- each of first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 as well as second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 of a touch member is implemented as divided patterns.
- touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 of the touch member include the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 .
- Each of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may be implemented as divided patterns, and each of the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 may be implemented as divided patterns.
- the general shape of the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 may be substantially the same as the mirror image of the general shape of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 .
- the general shape of the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 may be substantially the same as the general shape of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 that is reversed horizontally (symmetrical in the first direction DR 1 ) or vertically (symmetrical in the second direction DR 2 ). It is, however, to be understood that the present disclosure is not limited thereto.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 may be arranged alternately when viewed from the top.
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be connected in series, respectively.
- the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be implemented as divided patterns spaced apart from one another and may be electrically connected with one another by the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 .
- the second sub-touch sensing lines RS 12 _ 1 of the first touch sensing line RX 1 may be electrically connected with one another by the first sub-touch sensing lines RS 11 .
- the above description on the first touch sensing line RX 1 can be equally applied to the second to sixth touch sensing lines RX 2 , RX 3 , RX 4 , RX 5 and RX 6 .
- the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 may have different lengths.
- the lengths of the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 in the first direction DR 1 may become shorter toward the first touch sensing line RX 1 and may become longer toward the sixth touch sensing line RX 6 . It is, however, to be understood that the present disclosure is not limited thereto.
- the lengths of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 in the first direction DR 1 may become longer toward the first touch sensing line RX 1 and may become shorter toward the sixth touch sensing line RX 6 .
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 may have different conductivities (or electrical resistances).
- the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may have higher conductivities than the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 . It is, however, to be understood that the present disclosure is not limited thereto.
- the electrical resistances of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may be less than the electrical resistances of the second sub-touch sensing lines RS 12 , RS 22 , RS 32 , RS 42 , RS 52 and RS 62 .
- each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 includes the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 connected in series
- the actual lengths of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may become longer toward the first touch sensing line RX 1 and may become shorter toward the sixth touch sensing line RX 6 .
- the lengths of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 may become longer toward the first touch sensing line RX 1 and may become shorter toward the sixth touch sensing line RX 6 .
- RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 may become shorter toward the first touch sensing line RX 1 and may become longer toward the sixth touch sensing line RX 6 .
- the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be calculated based on Equation 3, which represents an equation for calculating two resistors connected in series.
- RX R 1+ R 2 (3)
- RX denotes the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6
- R 1 denotes the electrical resistance of each of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 ) of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6
- R 2 denotes the electrical resistance of each of the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 ,
- the electrical resistance of each of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be equal to the sum of the electrical resistance of the respective first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 , and the electrical resistance of the respective second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 .
- the electrical resistances of the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 is less than the electrical resistances of the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 , respectively, the electrical resistances of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may be substantially uniform.
- the length of the first sub-touch sensing line RS 11 of the first touch sensing line RX 1 may be longer than the length of the first sub-touch sensing line RS 61 of the sixth touch sensing line RX 6
- the length of the second sub-touch sensing line RS 12 of the first touch sensing line RX 1 may be shorter than the length of the second sub-touch sensing line RS 62 of the sixth touch sensing line RX 6 .
- the ratio of the first sub-touch sensing line RS 11 having relatively low electrical resistance is high in the first touch sensing line RX 1 .
- the ratio of the first sub-touch sensing line RS 61 having relatively low electrical resistance may be low in the sixth touch sensing line RX 6 , so that the electrical resistance of the first touch sensing line RX 1 is substantially the same as the electrical resistance of the sixth touch sensing line RX 6 .
- each of the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 is implemented as the divided patterns, it is possible to reduce the areas where the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 12 _ 1 , RS 22 _ 1 , RS 32 _ 1 , RS 42 _ 1 , RS 52 _ 1 and RS 62 _ 1 overlap each other in the thickness direction (the third direction DR 3 ).
- FIG. 13 is an enlarged view showing some of touch sensing lines of a touch member according to yet an embodiment.
- the embodiment of FIG. 13 is different from the embodiment of FIG. 7 in that contact holes CNT 11 _ 2 , CNT 12 _ 2 , CNT 21 _ 2 , CNT 22 _ 2 , CNT 31 _ 2 , CNT 32 _ 2 , CNT 41 _ 2 , CNT 42 _ 2 , CNT 51 _ 2 , and CNT 52 _ 2 , CNT 61 _ 2 and CNT 62 _ 2 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 , RX 6 have different sizes.
- the sizes of the contact hole CNT 11 _ 2 , CNT 12 _ 2 , CNT 21 _ 2 , CNT 22 _ 2 , CNT 31 _ 2 , CNT 32 _ 2 , CNT 41 _ 2 , CNT 42 _ 2 , CNT 51 _ 2 , CNT 52 _ 2 , CNT 61 _ 2 and CNT 62 _ 2 of the touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 may increase toward the touch sensing line RX 1 and may decrease toward the sixth touch sensing line RX 6 . It is, however, to be understood that the present disclosure is not limited thereto.
- the areas in which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 for RS 26 are in direct contact with each other may decrease toward the first touch sensing line RX 1 and may increase toward the sixth touch sensing line RX 6 .
- contact resistances at the areas in which the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 and the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 for RS 26 are in contact with each other may decrease toward the first touch sensing line RX 1 and may increase toward the sixth touch sensing line RX 6 .
- the longer the first sub-touch sensing lines RS 11 , RS 21 , RS 31 , RS 41 , RS 51 and RS 61 are, the larger the contact holes CNT 11 _ 2 , CNT 12 _ 2 , CNT 21 _ 2 , CNT 22 _ 2 , CNT 31 _ 2 , CNT 32 _ 2 , CNT 41 _ 2 , CNT 42 _ 2 , CNT 51 _ 2 , CNT 52 _ 2 , CNT 61 _ 2 and CNT 62 _ 2 are (in which they are in contact with the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 and RS 26 , respectively) and the smaller the contact resistances are.
- FIG. 14 is an enlarged view showing some of touch sensing lines of a touch member according to an embodiment.
- the embodiment of FIG. 14 is different from the embodiment of FIG. 7 in that all or some of the first sub-touch sensing lines RS 11 _ 3 , RS 21 _ 3 , RS 31 _ 3 , RS 41 _ 3 , RS 51 _ 3 and RS 61 _ 3 of touch sensing lines RX 1 , RX 2 , RX 3 , RX 4 , RX 5 and RX 6 include substantially the same shape.
- the lengths by which the first sub-sensing lines RS 11 _ 3 , RS 21 _ 3 , RS 31 _ 3 , RS 41 _ 3 , RS 51 _ 3 and RS 61 _ 3 are electrically connected to the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 and RS 26 , respectively, may be different from one another.
- gaps g 1 , g 2 , g 3 , g 4 , g 5 and g 6 between the divided patterns of the second sub-touch sensing lines RS 21 , RS 22 , RS 23 , RS 24 , RS 25 and RS 26 may be substantially equal.
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Abstract
Description
RX=R1+R2 (3)
where RX denotes the electrical resistance of each of the touch sensing lines RX1, RX2, RX3, RX4, RX5 and RX6, R1 denotes the electrical resistance of each of the first sub-touch sensing lines RS11, RS21, RS31, RS41, RS51 and RS61) of the touch sensing lines RX1, RX2, RX3, RX4, RX5 and RX6, and R2 denotes the electrical resistance of each of the second sub-touch sensing lines RS12_1, RS22_1, RS32_1, RS42_1, RS52_1 and RS62_1 of the touch sensing lines RX1, RX2, RX3, RX4, RX5 and RX6. For example, the electrical resistance of each of the touch sensing lines RX1, RX2, RX3, RX4, RX5 and RX6 may be equal to the sum of the electrical resistance of the respective first sub-touch sensing lines RS11, RS21, RS31, RS41, RS51 and RS61, and the electrical resistance of the respective second sub-touch sensing lines RS12_1, RS22_1, RS32_1, RS42_1, RS52_1 and RS62_1.
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US20170278900A1 (en) * | 2016-03-25 | 2017-09-28 | Samsung Display Co., Ltd. | Flexible display device |
KR20190025798A (en) | 2017-09-01 | 2019-03-12 | 삼성디스플레이 주식회사 | Input sensing unit and display device having the same |
US11340737B2 (en) * | 2018-01-02 | 2022-05-24 | Beijing Boe Display Technology Co., Ltd. | Touch structure and method for manufacturing the same, touch substrate, display substrate |
KR20210145877A (en) | 2020-05-25 | 2021-12-03 | 삼성디스플레이 주식회사 | Display device |
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